[CONTINUUM-2713] remove submitcancel tag

Move towards a standard theme to make upgrades easier

git-svn-id: https://svn.apache.org/repos/asf/continuum/branches/CONTINUUM-2713@1542498 13f79535-47bb-0310-9956-ffa450edef68
[CONTINUUM-2713] remove data tag

These are not inside forms, so are relying on specific theme layout, when
they should just provide the HTML they expect

git-svn-id: https://svn.apache.org/repos/asf/continuum/branches/CONTINUUM-2713@1542499 13f79535-47bb-0310-9956-ffa450edef68
[CONTINUUM-2713] remove custom theme

Set size instead of using custom template. These could be set more
appropriately, but start with what they were using before.

git-svn-id: https://svn.apache.org/repos/asf/continuum/branches/CONTINUUM-2713@1542500 13f79535-47bb-0310-9956-ffa450edef68